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1 Earth Sciences Department, University of California–Santa Cruz, Santa Cruz, California 95060, USA
2 Royal Netherlands Institute for Sea Research, Department of Marine Biogeochemistry and Toxicology, P.O. Box 59, 1790 AB Den Burg, Texel, Netherlands
3 Earth Sciences Department, University of California–Santa Cruz, Santa Cruz, California 95060, USA
4 Laboratory of Palaeobotany and Palynology, Department of Biology, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, Netherlands
5 Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA
Changes in sea surface temperature (SST) during the Paleocene-Eocene Thermal Maximum (PETM) have been estimated primarily from oxygen isotope and Mg/Ca records generated from deep-sea cores. Here we present a record of sea surface temperature change across the Paleocene-Eocene boundary for a nearshore, shallow marine section located on the eastern margin of North America. The SST record, as inferred from TEX86 data, indicates a minimum of 8 °C of warming, with peak temperatures in excess of 33 °C. Similar SSTs are estimated from planktonic foraminifer oxygen isotope records, although the excursion is slightly larger. The slight offset in the oxygen isotope record may reflect on seasonally higher runoff and lower salinity.
Key Words: Paleocene • Eocene • isotopes • greenhouse
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